package com.wwl.springcloud.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import com.wwl.springcloud.dto.CommonResult;
import com.wwl.springcloud.dto.Payment;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;

/**
 * @author wwl
 * @version 1.0
 * @date 2021/8/19 17:44
 * @description:
 */
@RestController
@Slf4j
public class CircleBreakerController {
    public static final String SERVICE_URL = "http://nacos-payment-provider";

    @Resource
    private RestTemplate restTemplate;
    @RequestMapping("/consumer/fallback/{id}")
    //@SentinelResource(value = "fallback") //没有配置
    //@SentinelResource(value = "consumer",fallback = "handlerFallback") //fallback只负责业务异常
    @SentinelResource(value = "fallback",blockHandler = "blockHandler") //blockHandler只负责sentinel控制台配置违规
    //@SentinelResource(value = "fallback",fallback = "handlerFallback",blockHandler = "blockHandler",
           // exceptionsToIgnore = {IllegalArgumentException.class})
    public CommonResult<Payment> fallback(@PathVariable Long id,Throwable e) {
        CommonResult<Payment> result = restTemplate.getForObject(SERVICE_URL + "/paymentSQL/"+id, CommonResult.class,id);

        if (id == 4) {
            throw new IllegalArgumentException ("IllegalArgumentException,非法参数异常....");
        }else if (result.getData() == null) {
            throw new NullPointerException ("NullPointerException,该ID没有对应记录,空指针异常");
        }

        return result;
    }

    //fallback
    public CommonResult handlerFallback(@PathVariable  Integer id,Throwable e) {
        Payment payment = new Payment(id,"null");
        return new CommonResult<>(444,"兜底异常handlerFallback,exception内容  "+e.getMessage(),payment);
    }

    //blockHandler
    public CommonResult blockHandler(@PathVariable  Integer id,BlockException blockException) {
        Payment payment = new Payment(id,"null");
        return new CommonResult<>(445,"blockHandler-sentinel限流,无此流水: blockException  "+blockException.getMessage(),payment);
    }


    public static void main(String[] args) {
        int list[] = new int[5];
        list[0] =8;
        list[1] =3;
        list[2] =5;
        list[3] =1;
        list[4] =6;
        int max = list[4] ;
        int min = list[0] ;
        for (int i=0;i<list.length-1;i++){
            if (list[i]<min && list[i+1]>list[i]){
                min =list[i];
            }
            if (list[i+1]>max && list[i+1]>list[i]){
                max =list[i];
            }
        }
        System.out.println("max:"+max+"min:"+min);
    }
}
